Yokogawa updates ProSafe-RS safety instrumented system

November 4, 2013 - Yokogawa Electric announces an enhanced version of the ProSafe-RS safety instrumented system and the addition of a new function to the DPharp EJX multivariable transmitter. ProSafe-RS version R3.02.10, offers improved functions for upstream oil and gas, while the DPharp EJX multivariable transmitter has been enhanced to improve connectivity with ProSafe-RS. Enhancements include: 1. AGA gas flow rate calculation To monitor and control gas wells and pipelines, gas flow rate compensation is required. The in-situ gas volume needs to be compensated to a standard volume because the gas volume rises or falls significantly depending on the process temperature and pressure. This compensation is usually carried out by a control device or dedicated flow computer. For customers in regions such as the Americas and the Middle East who wish to eliminate the need for such dedicated devices, Yokogawa has incorporated a gas flow rate calculation function in ProSafe-RS R3.02.10. Thus ProSafe-RS, which is certified for use in SIL3 applications, is now suitable for use both in safety instrumentation and monitoring & control. 2. Modbus 2 communications between DPharp EJX and ProSafe-RS for gas flow rate calculation To compensate the gas flow rate, differential pressure, static pressure, and temperature must be measured. The DPharp EJX multivariable transmitter is a sensor that can measure all three of these variables. As the Modbus protocol is widely used in upstream oil and gas processes for communications between sensors and gas flow rate compensation devices, Yokogawa has added Modbus protocol support to the DPharp EJX multivariable transmitter. This sensor can thus be used together with ProSafe-RS to perform highly reliable and accurate gas flow rate calculations. 3. Support for the wide variety of networks used in oil and gas upstream A variety of networks are used to link ProSafe-RS at the site to the Yokogawa FAST/TOOLS SCADA system. Some networks use high-bandwidth optical fiber, while others rely on low-bandwidth wireless links. By optimizing the frequency of data collection and the volume of transmitted data, ProSafe-RS R3.02.10 can now link up with other systems using low-bandwidth media. This improves maintenance efficiency by enabling remote engineering. Essential data is stored on the ProSafe-RS controller, ensuring continuity in the event of a network failure. About ProSafe-RS In the oil, natural gas, petrochemical, iron & steel, and other energy and basic materials industries, it is important to ensure the safety of plant operations and thereby fulfill our obligations to society by preventing accidents and protecting the environment. Released in February 2005, the ProSafe-RS safety instrumented system helps prevent accidents by detecting abnormal conditions in plant operations and initiating actions such as an emergency shutdown. About Yokogawa Corporation of America Yokogawa Corporation of America  is a leading provider of Industrial Automation and Test and Measurement solutions.  Combining superior technology with engineering, system integration, project management, and maintenance services, Yokogawa delivers field-proven operational efficiency, safety, and reliability.  Yokogawa Corporation of America is headquartered in Sugar Land, TX, and is the North American Division of Yokogawa Electric Corporation's global network of 25 manufacturing facilities and 4 regional project engineering centers.  

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